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多年来我厂拖拉机齿轮和花键轴的毛坯都是沿用胎模锻造。它与模锻相比,有用人多、生产率低、劳动强度大、锻件质量不稳定、易出事故等许多问题,不能适应生产发展。我厂目前只有250、400和750公斤空气锤各一台。要弃掉落后的胎模锻实现空气锤上模锻东方红54/75等拖拉机的齿轮和花键轴,除某些典型锻件有待工艺试验之外,最主要的还是大型模块的材料来源和加工问题。如直径较大的锻模钢,我们小厂往往不易买到,买到了也很难下料、锻打和机械加工。
Over the years I plant tractor gear and spline shaft are used along the tire forging. Compared with forging, it has many useful persons, low productivity, high labor intensity, unstable forging quality, easy to accident and many other problems, which can not adapt to the development of production. I plant currently only 250,400 and 750 kilograms of air hammer each one. To discard the backward tire forging to achieve the hammer on the East Red 54/75 tractor gear and spline shaft, in addition to some of the typical forgings to be tested, the most important is the material source of large modules and Processing problems. Forging die steel with larger diameter, our small factory is often not easy to buy, it is also difficult to buy the material, forging and machining.